CELASTRACEA 37 



CELASTKACEiE. 



A slender deciduous shrub with 4-angled brauch'js: leivves 2-4 inches long 1 



A low much-branched evergreen: leaves G-IS liuud long, numerous 3 



1. EUONYMUS, Tournefort. 

 I. E, occidentalis, Toum. Flowers dark brown, parts in S's, rotate, drooping. 



2. PACHYSTIMA, llafinesque. 

 1. P, Mersinitea, Eaf, Flowers greenish, parts in 4'8, about a line broad. 



rhamnacej:. 



Flowers greenish. Leaves alternate: flexuose branches spiny 1 



Leaves alternate: not spiny: fruit juicy 2 



Leaves opposite, 1 or 2 lines long: fruit dry 3 



Rowers white or blue, in dense clusters: fruit dry 4 



1. ZIZYPHUS, Jussieu. 

 1. Z. Panyi, Terr. Peduncles axillary, recurved in fruit, 1-3-flowered. 



2. RHAMNUS, Linnaeus. 



Flowers apetalous and mostly dioecious: seeds concave 1, 2 



Flowers with minute petals, mostly perfect: seeds convex on the back 3, 4 



1. B.. alnifolia, L'Her. Low: deciduous leaves acute at each end, serrate. 



2. R. crocea, Nutt. Leaves acutely denticulate, evergreen, thin. 



3. R, Californica, Esch. Leaves elliptical to ovate-oblong, evergreen, thick. 

 Var. tomeDtella, Or. Densely white-tumentose. Both forms common in CaL 



4. R. Purshiana, DC. Elliptical leaves 2 to 7 inches long, deciduous. 



3. ADOL.PHIA, Meisner. 



L A. Californica, Watson- In dense clumps 2 or 3 ft. high, branchleta spiny. 



4. CEANOTHTJS, Linnffius. 



§ L Leaves all alternate: fruit not crested. 



Leaves 3-nerved from the base. 



Branches not rigid or spiny: leaves glandular serrate (except No. 1). 



Flowers white in large clusters 1, 2, 8 



Flowers blue 4, 5, 6 



